I have a Javascript function that displays a time counter as the following : 0:0 and 0:1. But I actually want it to be displayed like this : 00:00 and 00:01.
Here is the code :
var interval = null;
var time = 0
function increaseTimer() {
// increase and print timer
time++
console.log(new Date() + ' ' + 'timer: ' + parseInt(time / 60, 10) + ':' + parseInt(time % 60, 10))
// condition of a process
if (time % 5 == 0) {
// some process
}
// stop simulation after 30s
if (time == 30) {
clearInterval(interval)
}
}
I call this function with interval variable : interval = setInterval(increaseTimer, 1000)
What should I change in my code to make it work ? Thanks in advance.
var interval = null;
var time = 0
function increaseTimer() {
// increase and print timer
time++
let prefix = parseInt(time / 60, 10)
let postfix = parseInt(time % 60, 10)
prefix = prefix <= 9 ? "0" + prefix.toString() : prefix.toString();
postfix = postfix <= 9 ? "0" + postfix.toString() : postfix.toString();
console.log(new Date() + ' ' + 'timer: ' + prefix + ':' + postfix )
// condition of a process
if (time % 5 == 0) {
// some process
}
// stop simulation after 30s
if (time == 30) {
clearInterval(interval)
}
}
You can simplify the code as follows:
let interval = null,
time = 0;
function increaseTimer() {
time++; // increase and print timer
console.log(new Date()+' '+'timer: '+("0"+~~(time / 60)).slice(-2)+':'+("0"+time % 60).slice(-2));
if (time % 5 == 0) { // condition of a process
// some process
}
if (time == 30) { // stop simulation after 30s
clearInterval(interval)
}
}